Narrowing searches based on url, author, date, and other attributes is also possible.
For instance, the query
[ Conan sourcename:Poynter ]
restricts searches for "Conan" to items from the blog "Poynter".
Examples of other operators follow:

• sourceurl:http://www.huffingtonpost.com/

items from the blog http://www.huffingtonpost.com/

• author:"Rupert Murdoch"

items by author "Rupert Murdoch"

• sourcename:"E-Media Tidbits"

items from blogs with "E-Media Tidbits" in the name

• title:substantiated

items with "substantiated" in the title

• date:01/28/10

items that appeared on 01/28/10

• body:"sharp gains"

items with "sharp gains" in the body

• date:[01/28/10 TO 02/04/10]

items appearing between 01/28/10 and 02/04/10

• link:http://www.apple.com/pr/library/2010/01/27ipad.html

items linking to http://www.apple.com/pr/library/2010/01/27ipad.html

Note: all operators that take urls will accept simple domain names, which match any item at that domain, or complete item urls.

Warren Buffett's newspaper company to buy Atlantic City paper
— Warren Buffett's newspaper company said Thursday it plans to acquire the Press of Atlantic City, N.J., for an undisclosed price. The Press is owned by Abarta, a private holding company in Pittsburgh that is owned by the Bitzer and Taylor families.

Warren Buffett's media group to buy Roanoke, Va., newspaper
— The Roanoke (Va.) Times will become part of Warren Buffett's newspaper group. — BH Media Group, an Omaha-based division of Berkshire Hathaway Inc., said Thursday that it would purchase The Times from Landmark Media Enterprises of Norfolk, Va., for an undisclosed price.

Warren Buffett buys Tulsa World
— Warren Buffett's newspaper group said Monday it would buy the Tulsa (Okla.) World daily newspaper. BH Media Group, a division of Berkshire Hathaway Inc., is to purchase the newspaper for an undisclosed amount from the Lorton family of Tulsa, which has owned the World for four generations.

Buffett company to close Va. newspaper, cut 105 jobs
— A 10,000-circulation Virginia newspaper owned by Warren Buffett's investment company will close at the end of the year as part of plan involving 105 job cuts in the 2,000-employee eastern U.S. newspaper operation. — The company said no other job cuts are planned.

Buffett adds Waco to growing paper network
— The Omaha World-Herald Co. said Friday it is buying the Waco (Texas) Tribune-Herald, the second Texas newspaper to be acquired as part of Omaha investor Warren Buffett's plan to build a network of community newspapers.

Warren Buffett buys Texas newspaper
— The Omaha World-Herald Co. said Tuesday it has agreed to buy the Bryan-College Station (Texas) Eagle newspaper from the Evening Post Publishing Co. of Charleston, S.C. The purchase, for an undisclosed price, is to close June 30.

Deal shows Buffett's faith in community newspapers
— Warren Buffett came through with cash when the nation's biggest banks were teetering. — Now, some observers say, he's doing the same for newspapers, although Buffett maintains that his fledgling network of community newspapers …

Local ownership means continued great journalism
… At 3:48 p.m. Tuesday, all productive work activity ceased for a time at the offices of The Omaha World-Herald Co. — That's when Publisher Terry Kroeger sent an email inviting stockholders to a meeting at 9 a.m. Wednesday.

Buffett to buy The World-Herald
— The Berkshire Hathaway company has agreed to purchase The Omaha World-Herald Co. from its employee shareholders and the Peter Kiewit Foundation. The transaction is expected to close in late December, pending approval of The World-Herald's shareholders …